diff --git a/wot-dijkstra/src/main/kotlin/org/pgpainless/wot/dijkstra/sq/RevocationState.kt b/wot-dijkstra/src/main/kotlin/org/pgpainless/wot/dijkstra/sq/RevocationState.kt
index d97d175b..9557a00f 100644
--- a/wot-dijkstra/src/main/kotlin/org/pgpainless/wot/dijkstra/sq/RevocationState.kt
+++ b/wot-dijkstra/src/main/kotlin/org/pgpainless/wot/dijkstra/sq/RevocationState.kt
@@ -5,6 +5,7 @@
 package org.pgpainless.wot.dijkstra.sq
 
 import java.util.*
+import kotlin.math.abs
 
 /**
  * Revocation State of a certificate.
@@ -48,7 +49,15 @@ class RevocationState private constructor(val type: Type, val timestamp: Date?)
     fun isNotRevoked(): Boolean = type == Type.None
 
     fun isEffective(referenceTime: ReferenceTime): Boolean {
-        return isHardRevocation() ||
-                (isSoftRevocation() && referenceTime.timestamp.after(timestamp))
+        if (isHardRevocation()) {
+            return true
+        }
+        if (isSoftRevocation()) {
+            if (referenceTime.timestamp.after(timestamp)) {
+                return true
+            }
+            return abs(referenceTime.timestamp.time / 1000 - timestamp!!.time / 1000) == 0L // less than one second diff
+        }
+        return false
     }
 }
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